Automatic regulating-valve.



I. DEFOY. AUTOMATIC REGULATING VALVE. APPLIOATION FILED MAEJ, 1912.

1,060,067. Patented Apr. 29, 1913.

Witnesses g% By Attorneys 4 Inventor COLUMBIA PLLNQQRAPH co WASHINGTON, D c

UNITED STATES PATENT ()FFICE.

IRENE DEFOY, OF QUEBEC, QUEBEC, CANADA.

AUTOMATIC REGULATING-VALVE.

Application filed March 7, 1912.

T 0 all whom it may concern:

Be it known that I, IRENE Dnror, a subject of the King of Great Britain, residing at Quebec, Province of Quebec, Canada, have invented certain new and useful Improvements in Automatic Regulating- Valves; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention to be hereinafter described relates to automatic regulating valves.

In order to more clearly disclose the construction, operation, and use of the invention, reference should be had to the accom panying drawings forming part of the present application.

Throughout the several figures of the drawings like reference characters designate the same parts.

In the drawings: Figure l is a central, vertical, cross section through the invention; Fig. 2 is a lateral cross section through the slide valve; and Fig. 3 is a central, vertical, longitudinal, cross section through the check valve 18.

The main objects of the invention are to provide a simple, eflicient, economical, durable, and compact automatic regulating valve for heating systems.

Referring to the drawings in detail, 1 in dicates a valve casing provided with inlet port 2, exhaust port 3, and delivery port 4. To the ends of this casing are detachably secured heads 5 and 6. Vithin the casing is slidably mounted a piston rod 7 to the opposite ends of which are secured the piston heads 8 and 9. The head 9 is adapted to slide freely in a bore 10 of the head 6, the

bore forming, practically, a reduced extension of the interior of the valve casing 1. The head 8,011 the other hand, slides freely in an enlargement of the interior of valve casing 1 and, when in the lowered position of Fig. 1, is seated directly over the upper end of a passage 11 formed in the head 5, for a purpose to be later disclosed. The central part of the rod 7 is flattened as at 12 to fit freely into a corresponding groove 13 in the body of a sliding valve 14. Collars 15 on the rod 7 prevent relative longitudinal movement between the rod and valve, and a spring 16 interposed between the portion 12 and the valve body 14 serves Specification of Letters Patent.

Patented Apr. 29, 1913.

Serial No. 682,288.

to keep the valve pressed against the inner face of the valve casing, at all times.

A coil spring 17 in the head 6 acts, normally, to maintain the piston heads 8 and 9 and the valve 14 in the positions shown in Fig. 1. l/Vhen in the position shown in Fig. 1, a heating fluid entering through inlet port 2 will flow into the valve casing and out through exhaust port 3 to a suitable outlet.

- To the delivery port 4 is connected one end of a heating main. To the opposite end of the main, or at any suitable point in the main, is secured a controlling check valve 18 arranged to open and permit passage of heatingfluid frorrrthe heating'system when the pressure in the system has fallen below a predetermined point. The heating fluid passes through valve 18, through a suitable connection 19, and into the passage 11 beneath piston head 8. This causes the piston head 8 and rod 7 to rise, carrying valve 14 with them. As valve 14 rises, it will close the exhaust port 3 and open the delivery port 4. Thus, fluid entering by port 2 will pass through the port 4 and into the main of the heating system, increasing the pressure therein. As the pressure thus increases, the check valve will close and the pressure will be cut off from the under face of the piston head 8. When this happens, the spring 17 will force the rod 7 and piston head 8 back to the initial position of Fig. l, and the en-- tering fluid will pass out by way of exhaust port 3, as before.

The normal pressure in the system, acting in the direction of the arrows, will keep the check valve forced toward the left of Fig. 3, against the pressure of its spring, so that the passages through its stem will be out of alinement with the entrance to the by pass passage in the shell or casing of the valve 18. But, when the pressure in the system drops below the predetermined point, the spring of the valve will force it in the opposite direction. When it reaches the limit of its travel in this direction, the lateral port in the valve stem will be alined with the entrance to the by pass in the easing. Then the steam or other fluid will flow through the by pass and beneath the head 8, with the resulting operations previously outlined.

The head 5 is provided with a small threaded bore communicating with the passage 11 and adapted to removably receive a hreaded nipple having a drip passage 1. In this nipple is slidably mounted a pring pressed valve 22 held normally inperative by a coil spring 28; Thus, when here is very low pressure, or no pressure .t all, in the passage 11, the valve 22 will e raised so that the drip passage 21 will e opento permit escape of drip or exhaust f the pressure medium as the spring 17 orces the piston head 8 to its seat.

In, order to avoid alternate suction and ompression between thehead 6 and piston lead 9, during operation of the device, a ypass passage 24 is provided in the wall f head 6, and casing 1, and establishes comiunication between theexhaust port 3 andhe upper endof bore. 10.

The. device is more particularly meant as means for using the. exhaust of engines, :0, which. would: otherwise be wasted. To

his end, the inlet port 2. is usually. connected.

.p to theexhaust of; a. steam engine or. the ike.

eding detailed description.

Changes may. bemadein the construction,

rrangement and, disposition oi. the several; arts, of the invention without in any Way eparting from; the, field and scope of. the ame, and it is meant to include all such within this application wherein only; a preerred form has been disclosed.

Having thus fully; described my. invenion, what I- claim as new and desire to seure, by Letters Patent is:

1; In combination, a casing provided ith an. inlet port, an exhaust port, and a elivery'port; a-rod-slidably mounted there-- 1 and; provided. with piston heads on its pposite ends, a valvecarried by said rodnd,adapted to control said exhaust and-said elivery ports, a heating system connected,

) said delivery port, a passage leading beeath one-ofthe aforesaid-piston heads, conectiOnSSbetWeen-Said passage and said heatlg system, anda check valve interposed in lid connections.

It isthought that, the. operation. and use, f the inyentiomwill; be; clearfrom the prev.-

adapted to be seated over the end of said passage, means for keeping said last named head seated; over the end of said. passage,

a valve carried by the aforesaid head andadapted to alternately control the aforesaid exhaustand delivery ports, a heating sys-, tem connected to said delivery port, connections between said system and the aforesaid passage, and a check valve in said connections.

3. In combination, avalve casing, provided with. an inlet port, anexhaust port, and a delivery port; ahead secured toone end of said casing and provided with a bore,

a he di eq d tm ethensendt f aide a I ing and provided with a passage, a rod slid ably mounted in said casing. and, provided of said headsbeing slidably mounted Within the. aforesaid bore. and theother. being adapted to be seated over the end of said passage, means for keeping said last named head seated over the end of said passage,-

a valve; carried; by. the ai resaid rod and adapted to. alternately: control the aforesaid exhaust and delivery'ports, a heating sys tem connected to said delivery p ort, connections between said system. and theaforesaid passage, a check valve in said connections,

a drip passage leading from said passage,

and a valve controlling said drip passage. In witness whereofI have hereunto set myhand in the presence of two witnesses IRENE DEFOY.

Witnesses E. LAHOYE, CHAS. VIZINA.

lopies of this-patent may-be obtained for-five cents each, by addressing the Commissioner ot-Patents.

Washington, D. C.

with piston heads on its oppesite,ends, .one.. 

